How will i add an dynamic order quantity?

[lester_2]

This the code in products

<?php
    require_once("inc/header.php");

    require_once("inc/navbar.php");

    /*
        if user is logged in then only allow the user to view the page
    */
    if (!isset($_SESSION['id'])){

        echo "<h1 class='text-center text-upper text-bs-primary'>please login to view your cart <a class='text-black' 

        href='login.php'>Login</a></h1>";

        exit();
    }
    else{
        $user_id = $_SESSION['id'];
    } 

    $carts = $db->FetchAll("*","cart","user_id='$user_id' AND active='y'","`id` DESC");

    if (empty($carts)) {

        echo "<h1 class='text-center text-bs-primary text-25 text-upper'>your cart is empty <a class='text-black' 

      href='products.php'>Go Shop</a></h1>";

        exit();
    }

?>

<div class="container padding-10"> <div id="cart-container-main"> <div class="text-center text-20 text-bold" 

id="cart-message"></div> <table class="table"> <th>Product image</th> <th>Product detail</th> <th>Price</th> 

<th>Tax</th> <th>Subtotal</th> <th>Remove</th> <tr> <?php

   $cod= 0;
        $main_subtotal = 0;
        $main_shipping_charge = 0;
        // create a product_id_stack
        $product_id_stack = "";

        foreach ($carts as $key => $cart) {
            $cart_id = $cart['id'];
            $cart_product_id = $cart['product_id'];
            // add product_id to the product_id_stack
            $product_id_stack .= $cart_product_id.",";

            $product = $db->Fetch("*","product","id='$cart_product_id'");

            /*shipping charge formating*/
            if ($product['shipping'] == 0) {
                $shipping_text = "<span class='text-bold text-green'>FREE</span>";
                $shipping_price = 0;
            }else{
                $shipping_text = "".$product['shipping'];
                $shipping_price = $product['shipping'];
            }

            $subtotal = $product['sp'] + $shipping_price;
            echo "
            <td><img src='{$product['image']}' class='cart-image'></td> <td>{$product['name']}</td> <td>{$product['sp']}.00 php</td> <td>{$shipping_text}</td> <td>{$subtotal}.00 php</td> <td><button class='remove-from-cart btn btn-primary text-18' id='{$cart_id}'><i class='fa fa-trash-o'></i></button></td> <tr>";

            /*calculate all the shipping charge*/
            $main_shipping_charge = $main_shipping_charge + $shipping_price;
            /*calculate all the sp*/
            $main_subtotal = $main_subtotal + $product['sp'];
        }
    ?>
    </table> <hr/> <div style="width:280px;" class="float-right"> <div class="row"> <input type="hidden" value="<?php echo encryption("encrypt", $product_id_stack);?>" 
    id="product-id-stack"> <div class="col-sm-6 text-left text-muted">Total</div> <div class="col-sm-6 text-right"><?php echo $main_subtotal; ?>.00 php</div> 

    <div class="col-sm-6 text-left text-muted">Tax</div> <div class="col-sm-6 text-right"><?php echo $main_shipping_charge ?>.00 php</div> <!-- / delivery --> <div class="col-sm-6 text-left text-20 text-muted">You Pay

    </div> <div class="col-sm-6 text-20 text-right"><?php echo $main_shipping_charge + $main_subtotal ?>.00 php</div> <!-- / you pay --> <div class="col-sm-12 text-25"> <a data-toggle="modal" data-target="#myModal" href="#" class="btn btn-primary text-upper btn-block">continue</a> </div> </div> </div> <div class="float-clear"></div> </div> <!-- / cart-container-main  --> <?php

    require_once("inc/footer-nav.php"); ?> </div> <!-- /container --> <!-- buy modal --> <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog"> <div class="modal-content">

    <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title">Place Your Order</h4> </div><!-- / modal-header --> <div class="modal-body"> <form action="cart.php" method="post" id="place_order_form"> <div class="form-group"> <label for="order_name">Cash on Hand</label> <input type="text" class="form-control order_input" name="order_name" id="order_name" placeholder="Pakilagay po kung magkano po ang hawak niong pera para madala po ung barya"> </div> <

    <div class="form-group"> <label for="order_email">Email Address</label> <input type="text" class="form-control order_input" name="order_email" id="order_email" placeholder="Enter your email address."> 
    </div> 
    <div class="form-group"> <label for="order_mobile">Mobile Number</label> <input type="text" class="form-control order_input" name="order_mobile" id="order_mobile" placeholder="Enter your 11 digit mobile number"> </div> <div class="form-group"> <label for="order_city">Full 

    Address</label> <input type="text" class="form-control order_input" name="order_city" id="order_city" placeholder="Pakilagay po yung full address na pagdedeliveran"> </div> <div class="form-group"> <label for="order_pincode">Pincode</label> <input type="text" class="form-control order_input" name="order_pincode" id="order_pincode" placeholder="Enter 6 digit pincode number."> 
    </div> 
    <div class="form-group"> 
    <label for="order_address">Remarks(add items na wala sa website)</label> <textarea class="form-control order_input" name="order_address" id="order_address" placeholder="paki-fillup po ng N/A pag wala">